Sandbox Reserved 766: Difference between revisions
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== Structure == | == Structure == | ||
'''Asparagine Synthetase''' is a homodimer comprised of two domains ligated together. ASPS consists of a | '''Asparagine Synthetase''' is a homodimer comprised of two domains ligated together. ASPS consists of a | ||
<scene name='56/564042/Glutamine_amidotransferase/1'>Glutamine Amidotransferase Type-2</scene> (residues 2-191) and and Asparagine Synthetase complex (residues 213-536). There are two specific domains that contain the substrate binding sites. The N-terminal domain which contains two layers of anti-parallel beta sheets comprised of six layers each,(site PDB)this is where the Glutamine binds. A C-terminal domain also exists, it is comprised of five parallel beta sheets with alpha helices on either side of it, (site PDB) this is where the Mg2+, ATP and Aspartic Acid bind. The two active sites contained within the terminal domains are linked together by a tunnel of hydrophobic and polar surface amino acid residues. Specifically | <scene name='56/564042/Glutamine_amidotransferase/1'>Glutamine Amidotransferase Type-2</scene> (residues 2-191) and and <scene name='56/564042/Asparagine_synthetase_complex/1'>Asparagine Synthetase</scene> complex (residues 213-536). There are two specific domains that contain the substrate binding sites. The N-terminal domain which contains two layers of anti-parallel beta sheets comprised of six layers each,(site PDB)this is where the Glutamine binds. A C-terminal domain also exists, it is comprised of five parallel beta sheets with alpha helices on either side of it, (site PDB) this is where the Mg2+, ATP and Aspartic Acid bind. The two active sites contained within the terminal domains are linked together by a tunnel of hydrophobic and polar surface amino acid residues. Specifically <scene name='56/564042/Residue_365/1'>Residue 365</scene> is important for the binding of the Beta-Asparty-AMP intermediate into the enzyme. | ||
===Amino Acid Composition=== | ===Amino Acid Composition=== | ||